t_062_589_n_ary_tree_preorder_traversal

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Published: May 31, 2023 License: Apache-2.0 Imports: 0 Imported by: 0

README

https://leetcode.cn/problems/n-ary-tree-preorder-traversal/
589. N 叉树的前序遍历
简单

给定一个 n 叉树的根节点  root ,返回 其节点值的 前序遍历 。

n 叉树 在输入中按层序遍历进行序列化表示,每组子节点由空值 null 分隔(请参见示例)。


示例 1:

输入:root = [1,null,3,2,4,null,5,6]
输出:[1,3,5,6,2,4]

示例 2:

输入:root = [1,null,2,3,4,5,null,null,6,7,null,8,null,9,10,null,null,11,null,12,null,13,null,null,14]
输出:[1,2,3,6,7,11,14,4,8,12,5,9,13,10]

 

提示:

    节点总数在范围 [0, 104]内
    0 <= Node.val <= 104
    n 叉树的高度小于或等于 1000

 

进阶:递归法很简单,你可以使用迭代法完成此题吗?

Documentation

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Constants

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Variables

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Functions

This section is empty.

Types

type Node

type Node struct {
	Val      int
	Children []*Node
}

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